How Much Research Do You Put Into a Book?

How much research to put into a book depends on how strong you want your argument to be. It doesn't even have to be two or three different articles, it could just be a meta analysis because they hold more weight when it comes to the strength of the argument you put across. They're not really creating anything worth thinking about in my point of view. I'm going to make them out. But that's exactly why this gen pot is so bad - people don't need a strong argument because they're just agreeing with what's already known.